The minimum cover for the lower roof pitch is as for an apron flashing the flashing must be extended at least 250 mm under the higher roof pitch e2 as1 figure 44.
Apron roof flashing nz.
They are essentially flat strips of polycarbonate bent into the various profiles.
A flashing which runs horizontal to the corrugate and has a vertical upstand with a 200mm flap folded at the same pitch of the roof with a soft edge at the bottom.
Apron flashing goes against a wall and down onto the polycarbonate roofing.
Flashing at a change of pitch for eh wind zone is outside the scope of e2 as1 and must be treated as an alternative method.
E2 as1 requires eaves flashing see figure 7 to be installed with long run profiled metal roofing in vh or eh wind zones where the roof slope is 10 or less and the soffit width is 100 mm or less from the cladding.
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The fabricated corner flashing needs a stop end with the stop end 35 mm minimum high up to the bottom of the cladding then cut back to also close off the cavity up to the top of the flashings.
Flashings near the edges of roofs or walls can be subjected to suction or negative wind loads that can be greater than other positive imposed loads.
New zealand metal roofing manufacturers inc.
Check out our wide range of flashings from brands you know trust.
Dektite flashings are a range of epdm or silicone polymer flashings distributed in nz by dlm and manufactured by deks industries pty ltd australia.
As drawn the details do not close off the cavity to water entry blown by wind up the slope of the roof on the apron flashing.
April 2012 nz metal roof and wall cladding code of practice table of contents v 2 2 page 3 table of contents 1 1 0 table of contents 2 0p erformance 3 0 construction load 4 0 d esign 5 0f lashings 6 0p enetrations 7 0i nstallation 8 0 roof drainage 9 0 plastic roof lighting 10 0 pressed metal tiles.
I 2 o i build supplement flashings 23.
Note these flashings do not have corrugations in them.
The range delivers a wide choice of specifically designed innovative products to prevent the ingress of water and dust at service pipes flues and ducts that penetrate roofs or walls.
All roof cladding located at the join except gutters require a flashing fastened on both sides of the join.
You can also use coloursteel or galvanised flashings available from most hardware stores such as bunnings or mitre 10.
